John, It really doesn't matter which SB you use with most sound card programs. If the mode is sensitive to polarity, then there is usually a reverse or inverse switch. The only difference will be the dial frequency on your rig, but the actual operating frequency will be the same whether you use LSB or USB. I was trying to remember why RTTY was LSB. I seem to remember it had something to do with modifying VFOs in the early 50's? I don't remember. USB is more comfortable for me, it seems I can add the audio tones to the dial frequency easier than I can subtract them.
73, Mark N5RFX At 10:45 AM 10/23/2005, you wrote: >Can some one tell me why the sound card digital modes use USB >and not LSB like the other digital modes? > >John, WØJAB >Louisiana, Missouri >EM48LK > > > > > > > > >The K3UK DIGITAL MODES SPOTTING CLUSTER AT telnet://208.15.25.196/ >More info at <http:///www.obriensweb.com>http:///www.obriensweb.com > > > > >SPONSORED LINKS ><http://groups.yahoo.com/gads?t=ms&k=Craft+hobby&w1=Craft+hobby&w2=Hobby+and+craft+supply&w3=Ham+radio&c=3&s=60&.sig=YqiuyVwjnQFdynnsmMwVWg>Craft > >hobby ><http://groups.yahoo.com/gads?t=ms&k=Hobby+and+craft+supply&w1=Craft+hobby&w2=Hobby+and+craft+supply&w3=Ham+radio&c=3&s=60&.sig=VduRJqNqUo9QkUiTI-knAA>Hobby > >and craft supply ><http://groups.yahoo.com/gads?t=ms&k=Ham+radio&w1=Craft+hobby&w2=Hobby+and+craft+supply&w3=Ham+radio&c=3&s=60&.sig=sl_TRqZTiP_WHSLe6P3ybA>Ham > >radio > > >---------- >YAHOO! GROUPS LINKS > > * Visit your group > "<http://groups.yahoo.com/group/digitalradio>digitalradio" on the web. > * > * To unsubscribe from this group, send an email to: > * > <mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED] > > * > * Your use of Yahoo! Groups is subject to the > <http://docs.yahoo.com/info/terms/>Yahoo! Terms of Service. > > >---------- ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/ELTolB/TM --------------------------------------------------------------------~-> The K3UK DIGITAL MODES SPOTTING CLUSTER AT telnet://208.15.25.196/ More info at http:///www.obriensweb.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
